Lesson 14.1 Introduction to Right Triangle Trigonometry True or False. Choose 'A' for True or 'B' for False. 1. The word "trigonometry" comes from the Greek words that mean "triangle measurement." 2. The study of trigonometry did not begin until long after the beginning of the Christian era. 3. The longest side of any right triangle is the hypotenuse. 4. A right triangle contains one right angle and two acute angles. 5. The hypotenuse of a right triangle can be opposite an acute angle of a triangle. 6. The legs of a right triangle form the right angle.

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